The popular barcode-scanning app, RedLaser (free), has recently been updated. Now, users of the application can take advantage of improved scanning capabilities, which make the application quicker and more useable than ever before.

The iPhone can help you quickly look up, price check, or catalogue items through different barcode scanning apps. Many of these apps will even work on the new iPod Touches with cameras. This AppGuide will showcase some of the best ones out there.